JPH10212718A - Unit for civil engineering structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit for a civil engineering structure by which the conformability to the face of slope of shore protection, or the like and the deflection restraint at the time of transportation can be highly satisfied. SOLUTION: Inside the frame 5 formed rectangularly by the four side parts 5a to 5d, a net body 6 is held. In the net body 6, a plurality of natural stones are bonded on its one side through adhesives, and also reinforcements 15 are provided. The reinforcements connect the central parts of the respective side parts 5a to 5d to each other, so that the deflection of the respective side parts 5a to 5d can be resisted by the reinforcements.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering building unit used for revetment or the like.

[0002]

2. Description of the Related Art For construction of seawalls, etc.
As shown in Japanese Patent Publication No. 2720, there is a tendency to use a civil engineering construction unit in order to grow plants on a seawall or the like and form a fish nest. In this civil engineering building unit, a plurality of stones are arranged on one side of a required large mesh piece, and each stone is attached to the mesh piece. By using this civil engineering building unit, multiple stones can be easily transported to a revetment slope, etc.
Even when the revetment slope is steep, the stone can be disposed on the revetment slope while preventing the stone from rolling down. This makes it possible to improve the workability of the revetment and the like, and to maintain the revetment after the construction for a long period of time.

[0003] Incidentally, the above-mentioned unit for civil engineering structures includes:
When laying on the revetment slope, etc., it is made to have flexibility so that it fits into the revetment slope, etc.,
The more easily it bends, the better it is from the standpoint of familiarity with seawall slopes and the like.

[0004]

However, as shown in FIGS. 5 to 8, the civil construction unit 101 is attached to a frame 102 around the unit 101 at the time of construction.
(Indicated by an arrow pointing upward in FIG. 7), the net-like piece 104 is lifted by a lifting means 105 such as a crane via the hanging metal fitting 103, and then transported to a seawall slope or the like. Must be a net 104
The load on the plurality of stones 106 (only some are shown) (in FIG. 6,
(Indicated by an arrow pointing downward) is greater than or equal to a predetermined value, the civil engineering building unit 101
There is a possibility that the central portion 107 bends downward and is pulled by this, and the frame line 102 bends inward while the frame line 102 faces downward (in FIG. 5 to FIG. 8, it is easy to understand. Therefore, such a bending phenomenon acts as a factor that causes an attachment relationship (for example, an adhesive relationship) between the mesh piece 104 and each stone 106 or a destruction of the stone itself. Is not very good.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a unit for civil engineering construction which can highly satisfy the adaptability to the seawall slope and the like, and the suppression of the bending during transportation. It is in.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a frame formed in a rectangular shape having four sides and a net-like piece is held in the frame. A plurality of stones are arranged on one surface side of the net-like piece, and in the civil engineering building unit in which each stone is attached to the net-like piece, the inner parts in the extending direction of the sides are adjacent to each other. The configuration is such that all sides are connected via a connection line.

Further, the preferred embodiments of the first aspect of the present invention are as described in the fourth and fifth aspects.

Further, in order to achieve the above object, a second aspect is provided.
According to the invention, a mesh line is held in a frame line formed in a rectangular shape with four sides, and a plurality of stones are arranged on one side of the mesh line. In the civil engineering building unit attached to the net-like piece, the inside portions in the extending direction of the side portions are connected to each other via connecting lines at all the opposing side portions.

In a preferred embodiment of the present invention,
It is as described in claims 3, 4 and 5.

[0010]

According to the first aspect of the present invention, the net has a flexibility based on the original properties of the net, and a center of the net which is lifted and conveyed based on the load of a plurality of stones. As the part tries to bend below the frame line, each of the four sides of the frame line tries to bend inward while facing down, but it also tries to bend inwards. Each force is reduced by the connection line receiving a part of the load of the plurality of stones, and adjacent sides are transmitted to each other via the connection line, and stretch the net-like piece in a plane direction. It will be used accurately as power. Moreover, since the inner portions in the extending direction of the side portions are connected to each other via the connecting line in all the adjacent side portions, based on the above-described operation,
When each connecting line is bent, the inward resultant force at the end of each adjacent connecting line (the tensile force toward the center in the extending direction of each connecting line due to the bending is applied to the end of the adjacent connecting line. In this case, a resultant force is generated, and the bending of each side portion is suppressed based on the balance of the resultant force. That is, a set of opposing resultant forces is
When working to bring one set of opposing sides closer, the other set of opposing sides is moved away, and the opposing resultant force of the other set is
When working to bring the opposing sides of the other set closer together, one set of opposing sides will be moved away, and eventually each resultant force will be balanced to suppress the inward bending of each side. In other words, the mesh piece is to be kept flat. As a result, it is possible to easily provide a civil engineering building unit that can highly satisfy the adaptability to the revetment slopes and the like and the suppression of deflection during transportation.

According to the second aspect of the present invention, the central portion of the net-like piece is flexible based on the intrinsic properties of the net-like piece, and is lifted and conveyed by the load of a plurality of stones. As each of the four sides of the frame line is bent downward, the four sides of the frame line are bent toward the inward side of the mesh piece, but are bent toward the inside. The force is reduced as the connecting line is reduced by receiving a part of the load of the plurality of stones, and the adjacent sides are transmitted to each other via the connecting line to push the net-like piece in a plane direction. It will be used accurately. Therefore, in this case,
It is possible to easily provide a unit for civil engineering construction that can highly satisfy the adaptability to the revetment slopes and the like and the suppression of the bending during transportation.

According to the third aspect of the present invention, the inner portions in the extending direction of the sides are connected to each other on all the opposing sides and all the adjacent sides via the connection lines. From this, the force of each side to bend will be further suppressed by the connection line, and while placing more weight on the deflection suppression at the time of transportation, the conformability to the seawall slope etc. The suppression of deflection can be highly satisfied.

According to the fourth aspect of the present invention, since the inner portion in the extending direction of the side portion is the center portion in the extending direction of the side portion, the inner portion in the extending direction of the side portion is determined based on the load of the plurality of stones. Thus, the portions having the largest amount of bending are connected to each other by the connecting line, and the connecting line can be most effectively used as a tension member from the viewpoint of suppressing bending.

According to the fifth aspect of the present invention, since each connecting line is at least partially located on the other surface side of the net-like piece, each connecting line is subjected to a load of a plurality of stones. Based on, the net-like piece will also support the force that tends to bend downward, so as to suppress it, and while ensuring the conformability to the seawall slope etc., the deflection at the time of transport of the unit for civil engineering construction, It can be further suppressed.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment. In this first embodiment, reference numeral 1 denotes a unit for civil engineering structures according to the present embodiment to be laid on a seawall or the like, and each of the units 1 for civil engineering structures is provided on one side of a wire mesh 2 as a net-like piece. A plurality of natural stones 3 are uniformly arranged, and each natural stone 3 is integrated with the wire netting 2 by an adhesive 4 such as an epoxy resin.

The wire mesh 2 has a frame line (bone line) 5 having a rectangular shape (square shape in this embodiment) with four sides 5a to 5d around the wire mesh 2. , A net body 6 is held therein. Net 6
Form a mesh 8 using the wire 7,
In the present embodiment, a mesh having a wire diameter of about 4 mm is used, and the mesh 8 has a side set to about 5 cm.

Of course, as the wire mesh 2, a rhombus wire mesh, a pierced wire mesh, a synthetic resin net, or a wire is stretched horizontally in the frame 5 to form a mesh or mesh as a plurality of eyes. Such a device may be used as appropriate.

In the present embodiment, the wire mesh 2 has
As shown in FIG. 2, reinforcing wires 9, 10, 1 are used as connecting wires.
3 and 14 are provided. These reinforcing lines 9, 10, 1
3 and 14 have the same bending strength and the like as the above-mentioned frame line 5, and these reinforcing lines 9
The central portions in the extending direction of a to 5d are connected to each other in all adjacent side portions. That is, the reinforcing wire 9 is connected (for example, welded or curled) to the side portions 5a and 5b whose both ends are adjacent to each other at the center portions in the respective extending directions. The mesh 8 of the net 6 is sewn, and a part of the reinforcing wire 9 is to be located on the other surface side of the wire mesh 2. The reinforcing wire 10 connects the side portions 5c and 5d whose both ends are adjacent to each other at the center portions in the respective extending directions. At this time, the reinforcing wire 10 also sewes the mesh 8 of the mesh body 6. A part of the reinforcing wire 10 is to be located on the other surface side of the wire mesh 2. The reinforcing wire 13 connects the side portions 5b and 5c, whose both end portions are adjacent to each other, at the respective central portions in the respective extending directions.
3 also sew the mesh 8 of the mesh body 6 and a part of the reinforcing wire 13 is located on the other surface side of the wire mesh 2. The reinforcing wire 14 connects the side portions 5a and 5d whose both ends are adjacent to each other at the center portions in the respective extending directions. At this time, the reinforcing wire 14 also sewes the mesh 8 of the net body 6. A part of the reinforcing wire 14 is to be located on the other surface side of the wire mesh 2.

The wire mesh 2 is preferably made of a zinc-plated or zinc-aluminum-plated material having excellent durability.

As the natural stone 3, not only cobblestone but also broken stone is used, and its size is 100 to 5 in diameter.
It is about 00 mm. A plurality of such natural stones 3 are prepared, and in the present embodiment, the plurality of natural stones 3 do not protrude from the periphery of the frame 5 of the wire mesh 2, as shown in FIG. The wire mesh 2 is adhered to the wire mesh 2 with an adhesive 4.

[0021] As shown in FIG. 1, such a civil engineering building unit 1 is used as a suspension metal fitting for construction of a seawall or the like.
1 is hooked on the frame 5 of the wire mesh 2 and its hanging metal fittings 11
Through a lifting means 12 such as a crane. Then, the civil engineering building unit 1 is transported to a seawall slope or the like with the lifted state.

In this case, when the load of the plurality of natural stones 3 exceeds a predetermined value, the center of the civil engineering construction unit 1 is bent downward at a position lower than the surrounding frame line 5 and is pulled by this. The center portions of the sides 5a and 5c of the frame line 5 in the extending direction are bent downward and approach each other, and the center portions of the sides 5b and 5d of the frame line 5 in the extending direction face each other while facing downward. Try to bend closer (each force is
In FIG. 2, it is shown by an arrow pointing inward of the net 6).

However, the reinforcing lines 9, 10, 13, 14 are
Receiving a part of the load of the plurality of natural stones 3, the downward bending of the net body 6 is suppressed, and the side portions 5a, 5b, 5c, 5d of the frame line 5 are formed.
Is suppressed from trying to bend inward.

With respect to the side portions 5a and 5c, the bending force of the sides 5a and 5c approaching each other is determined by the reinforcing wires 9, 10, 1 and 2.
Due to 3 and 14, the side portions 5b and 5d are used as a force for pushing the sides 5b and 5d away from each other (in FIG. 2, indicated by broken arrows pointing outward of the net 6). On the other hand, with respect to the sides 5b and 5d, the bending force of the sides 5a and 5d (reinforcing lines 9, 10, 1 and 5) approaches each other.
3, 14), and is used as a force to push the sides 5 b and 5 d away from each other, and eventually the reinforcing wires 9, 10, 13, 14 are used as tension members. Accordingly, the sides 5a to 5d are prevented from bending inward, and accordingly, the center of the wire mesh 2 is also prevented from bending downward.

Further, since the inner portions in the extending direction of the side portions 5a, 5b, 5c, and 5d are connected to each other via the reinforcing wires 9, 10, 13, and 14 in all the adjacent side portions, Based on the above-described operation, each reinforcing wire 9, 10, 13,
14 is bent, each reinforcing wire 9, 10, 13, 14
At both ends thereof, a tensile force P toward the central portion in the extending direction is generated due to the bending, and the respective tensile forces P
Produces inward resultant forces M1, M2, M3, and M4 at the ends of adjacent reinforcing lines 9, 10, 13, and 14, respectively, based on the balance of the resultant forces M1, M2, M3, and M4. The bending of each side 5a, 5b, 5c, 5d is suppressed. That is, when one set of opposing resultant forces M1, M2 works to bring one set of opposing sides 5a, 5c closer to each other, the other set of opposing sides 5b, 5d
When the other sets of opposing resultant forces M3 and M4 act to bring the opposing sides 5b and 5d of the other set closer to each other, the set of opposing sides 5a and 5c is moved away. In the end, the resultant forces M1, M2, M3, and M4 are balanced to suppress the inward bending of the sides 5a, 5b, 5c, and 5d, and to maintain the wire mesh 2 in a flat shape. Become.

For this reason, when lifting the civil engineering building unit 1, even if the load of the plurality of natural stones 3 exceeds a predetermined value to a certain extent, the wire mesh 2 can be kept in a state within an elastic range close to a horizontal state. The civil engineering building unit 1 can be transported to a seawall slope or the like in a normal state. Moreover, at this time, since the reinforcing wires 9, 10, 13, 14 are at least partially located on the other surface side of the wire mesh 2, the reinforcing wires 9, 10, 13, 14 are formed by a plurality of natural wires. The wire mesh 2 is supported so as to suppress the force itself that tends to bend downward based on the load of the stone 3.

The civil engineering building unit 1 is mounted on a seawall or the like.
Is laid, the civil engineering structure unit 1 is properly adapted to the seawall slope and flexed based on its original flexibility, and the construction is performed accurately.

In the first embodiment, the individual reinforcing wires 9, 10, 13, and 14 are used. However, one reinforcing wire is bent to correspond to the reinforcing wires 9, 10, 13, and 14. A portion may be formed. In addition, on seawall slopes,
A suction prevention material (not shown) is to be provided, and the natural stone 3 holding units 1 are sequentially laid on the suction prevention material. The suction prevention material prevents earth and sand from flowing out of the gap between the natural stones 3.

FIG. 3 shows a second embodiment, and FIG. 4 shows a third embodiment. In each of the embodiments, the first
The same components as those in the embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the second embodiment, the opposing sides 5
a and 5c are connected to the reinforcing wire 15 at the central portion in the extending direction.
And the opposing sides 5b and 5d are connected by a reinforcing wire 16 at the center in the extending direction, and the center in the extending direction of the sides 5a to 5d is They are connected via reinforcing wires 15 and 16. Accordingly, each of the reinforcing wires 15 and 16 receives a part of the load of the plurality of natural stones 3 and suppresses the bending of the wire netting 2, and also, at both opposing sides 5 a and 5 c (5 b and 5 d), a tension member Will function as
Is suppressed.

The third embodiment is a combination of the first and second embodiments. The center portions in the extending direction of the side portions 5a to 5d are arranged such that all opposing side portions and all adjacent side portions have The reinforcing wires 9, 10, 13, 14, 15, 16 are connected. As a result, the respective effects of the second and third embodiments can be further enhanced.

Although the embodiments have been described above, the present invention includes the following aspects. Using fake stones instead of natural stones 3 as stones. When attaching each natural stone (stone) 3 to the wire netting 2, instead of using the adhesive 4 itself, both the adhesive and the connector (for example, an anchor) are used. Directly connecting the connecting tool to the wire mesh 2, connecting the connecting tool to the natural stone 3 via an adhesive and connecting the connecting tool to the wire mesh 2, connecting the connecting tool connected to the natural stone 2 directly And various connecting means for attaching the connecting tool connected to the natural stone 2 to the wire mesh 2 via an adhesive in a non-separable state.

It should be noted that the object of the present invention is not limited to what is explicitly specified, but also implicitly includes providing what substantially corresponds to what is described as preferred or advantageous.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a suspended civil engineering building unit according to an embodiment.

FIG. 2 is a plan view showing the wire mesh according to the first embodiment.

FIG. 3 is a plan view showing a wire mesh according to a second embodiment.

FIG. 4 is a plan view showing a wire mesh according to a third embodiment.

FIG. 5 is an explanatory view for explaining a conventional civil engineering building unit in a suspended state.

FIG. 6 is a perspective view illustrating a flexed state of the civil engineering building unit according to FIG. 5;

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a front view of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit for civil engineering structures 2 Wire mesh 3 Natural stone 4 Adhesive 5 Frame line 5a Side 5b Side 5c Side 5d Side 9 Reinforcement line 10 Reinforcement line 13 Reinforcement line 14 Reinforcement line 15 Reinforcement line 16 Reinforcement line

Claims (5)

[Claims] 1. A reticulated piece is held in a frame line formed in a rectangular shape with four sides, and a plurality of stones are arranged on one surface side of the reticulated piece. In the unit for civil engineering structures attached to the net-like piece, the inner parts in the extending direction of the side portions are connected to each other on all adjacent side portions via a connection line, Unit for civil engineering structures. 2. A reticulated piece is held in a frame line formed in a rectangular shape with four sides, and a plurality of stones are arranged on one surface side of the reticulated piece in the frame line. In the unit for civil engineering structures attached to the net-like piece, the inside portions in the extending direction of the side portions are connected to each other on all opposing side portions via connection lines, Unit for civil engineering structures. 3. The civil engineering construction according to claim 2, wherein the inner portions in the extending direction of the side portions are connected to each other via connecting lines also in all adjacent side portions. unit. 4. The unit for civil engineering construction according to claim 1, wherein the inner part in the extending direction of the side part is a central part in the extending direction of the side part. 5. The civil engineering building unit according to claim 1, wherein each of the connection lines is at least partially located on the other surface of the mesh piece.